:root {
    --bg-color: #0b0d10;
    --bg-overlay: rgba(11, 13, 16, 0.6);
    --text-primary: #ffffff;
    --text-secondary: #a0a5ab;
    --accent: #d4b886;
    --nav-bg: rgba(11, 13, 16, 0.4);
    --font-heading: 'Playfair Display', serif;
    --font-sans: 'Space Grotesk', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-padding-top: 180px; /* Account for fixed header */
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3 {
    font-family: var(--font-heading);
    font-weight: 400;
}

a {
    text-decoration: none;
    color: var(--text-primary);
}

/* Nav */
.main-nav {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 5%;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    transition: transform 0.4s ease, background 0.4s ease;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 150px;
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a:not(.btn-primary) {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

.nav-links a:not(.btn-primary)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -4px;
    left: 0;
    background-color: var(--accent);
    transition: width 0.3s ease;
}
.nav-links a:not(.btn-primary):hover::after {
    width: 100%;
}
.nav-links a:not(.btn-primary):hover {
    color: var(--accent);
}

.btn-primary {
    border: 1px solid rgba(255,255,255,0.3);
    padding: 0.8rem 1.8rem;
    border-radius: 30px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary:hover {
    background: var(--text-primary);
    color: var(--bg-color);
    border-color: var(--text-primary);
}
.btn-primary:hover .arrow {
    transform: translateX(4px);
}
.arrow {
    transition: transform 0.4s ease;
}

/* Hero Section */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    padding-left: 10%;
    padding-top: 180px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: -10%;
    left: 0;
    width: 100%;
    height: 120%;
    background-size: cover;
    background-position: center;
    z-index: -1;
    filter: brightness(0.65);
    will-change: transform;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 10;
}

.hero-title {
    font-size: 5.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    /* initial state for GSAP */
    opacity: 0;
    transform: translateY(60px);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    max-width: 500px;
    line-height: 1.5;
    /* initial state for GSAP */
    opacity: 0;
    transform: translateY(40px);
}

.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 10%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    opacity: 0; /* for gsap */
}

.scroll-indicator .text {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-secondary);
}

/* Feature Reveal Section (Pinned) */
.features-reveal {
    position: relative;
    width: 100%;
}

.feature-backgrounds {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 1; /* Stay behind the text panels */
    overflow: hidden;
}

.feature-backgrounds::after {
    /* global overlay to ensure text legibility */
    content: '';
    position: absolute;
    top:0; left:0; width:100%; height:100%;
    background: linear-gradient(90deg, var(--bg-overlay) 0%, rgba(11,13,16,0.2) 100%);
    z-index: 2;
}

.bg-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 2s ease-out;
    filter: brightness(0.7);
    z-index: 1;
}

.bg-item.active {
    opacity: 1;
    transform: scale(1.03); 
    z-index: 2;
}

.feature-content-wrapper {
    position: relative;
    z-index: 10; /* Above the pinned backgrounds */
    margin-top: -100vh; /* pull it back up over the sticky background */
}

.feature-panel {
    height: 120vh; /* Gives plenty of scroll space for each panel */
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding-left: 10%;
}

.panel-inner {
    max-width: 550px;
    padding: 3.5rem;
    background: rgba(11, 13, 16, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 24px;
    /* GSAP states */
    opacity: 0;
    transform: translateY(80px);
    will-change: transform, opacity;
}

.feature-tag {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 1rem;
    display: block;
}

.panel-inner h2 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    line-height: 1.1;
}

.panel-inner p {
    font-size: 1.15rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.icon-stat {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
}

.icon-stat .icon {
    font-size: 1.8rem;
}

/* Interactive Mockup */
.interactive-mockup {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10%;
    background: #080a0b;
    position: relative;
    z-index: 20;
}

.mockup-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.mockup-text {
    flex: 1;
    padding-right: 4rem;
}

.mockup-text h2 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.mockup-text p {
    color: var(--text-secondary);
    font-size: 1.2rem;
    line-height: 1.7;
    max-width: 450px;
}

.mockup-phone {
    width: 320px;
    height: 650px;
    border-radius: 45px;
    border: 12px solid #1a1a1a;
    background: #0d0f12;
    overflow: hidden;
    position: relative;
    box-shadow: 0 30px 60px rgba(0,0,0,0.6), inset 0 0 10px rgba(255,255,255,0.05);
    flex-shrink: 0;
}

.phone-screen {
    padding: 3rem 1.5rem;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.app-header {
    font-size: 1.4rem;
    margin-bottom: 2.5rem;
    font-weight: 500;
    text-align: center;
    font-family: var(--font-heading);
}

.app-rooms {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.room-item {
    list-style: none;
    padding: 1.5rem;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.02);
    border-radius: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
}

.room-item:hover, .room-item.active {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.1);
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.room-item .status {
    color: var(--accent);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Footer */
footer {
    padding: 8rem 10% 2rem 10%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: var(--bg-color);
    text-align: center;
    position: relative;
    z-index: 20;
    border-top: 1px solid rgba(255,255,255,0.05);
}

footer h2 {
    font-size: 4.5rem;
    margin-bottom: 3rem;
}

.btn-large {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 1.2rem 3.5rem;
    background: var(--text-primary);
    color: var(--bg-color);
    border-radius: 50px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    font-weight: 500;
}

.btn-large:hover {
    transform: translateY(-5px);
    background: var(--accent);
    box-shadow: 0 15px 30px rgba(212, 184, 134, 0.2);
}

.footer-bottom {
    margin-top: 8rem;
    width: 100%;
    display: flex;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 2rem;
}

.socials {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.socials a {
    color: var(--text-secondary);
    transition: color 0.3s;
    display: flex;
    align-items: center;
}
.socials a svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}
.socials a:hover {
    color: var(--text-primary);
}

.footer-nav {
    display: flex;
    gap: 2rem;
}

.footer-nav a {
    color: var(--text-secondary);
    transition: color 0.3s;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-size: 0.85rem;
}

.footer-nav a:hover {
    color: var(--accent);
}

/* Burger Menu */
.burger {
    display: none;
    cursor: pointer;
    z-index: 101;
    padding: 10px;
}

.burger span {
    display: block;
    width: 28px;
    height: 2px;
    background: var(--text-primary);
    margin: 6px 0;
    transition: all 0.3s ease;
}

/* Burger Animation */
.burger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}
.burger.active span:nth-child(2) {
    opacity: 0;
}
.burger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

@media (max-width: 768px) {
    .main-nav {
        padding: 0.5rem 8%;
    }

    .burger {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 100%;
        background: rgba(11, 13, 16, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transform: translateX(100%);
        transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 100;
        padding: 2rem;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-links a:not(.btn-primary) {
        font-size: 1.5rem;
    }

    .logo-img { height: 80px; }
    .hero-title { font-size: 3.5rem; }
    .panel-inner { padding: 2.5rem; }
    .panel-inner h2 { font-size: 2.5rem; }
    .mockup-container { flex-direction: column; text-align: center; gap: 3rem; }
    .mockup-text { padding-right: 0; }
    
    footer {
        padding: 5rem 8% 2rem 8%;
    }

    footer h2 { font-size: 2.5rem; margin-bottom: 2rem; }

    .footer-bottom {
        flex-direction: column;
        align-items: center;
        gap: 2.5rem;
        margin-top: 5rem;
        text-align: center;
    }

    .footer-nav {
        flex-direction: column;
        gap: 1.2rem;
        order: 1;
    }

    span[copy] { order: 3; } /* Targeting copyright span via order if needed, but flex-col handles it */
    
    .socials {
        order: 2;
        gap: 2rem;
    }
}